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Patent US3475188A successfully refreshed from Google Patents.
US3475188A
Expired / Lapsed
US
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Refractory compositions
Assignee: Steetley Refractory Brick Co Ltd
•
Filing: 1966-09-27
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Granted: 1969-10-28
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Expires: 1986-09-27
Abstract
No abstract record available.
Inventors
- 👤 Dennis Woodhouse
- 👤 Arthur John Harbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:48
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/628; C04B35/63; C04B35/6303; C04B35/66; C04B2111/00; C04B2111/00034; C04B2111/00146; C04B2111/00155; C04B2111/00474; C04B2111/0087; C04B2111/00887; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3205; C04B2235/3206; C04B2235/3231; C04B2235/3241; C04B2235/34; C04B2235/3418; C04B2235/70; C04B2235/96; C04B2235/9669; C04B2235/9676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2852401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |